Add the ability to get all issues in a sprint

sprint.go

@@ -15,6 +15,11 @@ type IssuesWrapper struct {
 	Issues []string `json:"issues"`
 }
 
+// Wrapper struct for search result
+type IssuesInSprintResult struct {
+	Issues []Issue `json:"issues"`
+}
+
 // MoveIssuesToSprint moves issues to a sprint, for a given sprint Id.
 // Issues can only be moved to open or active sprints.
 // The maximum number of issues that can be moved in one operation is 50.
@@ -34,3 +39,20 @@ func (s *SprintService) MoveIssuesToSprint(sprintID int, issueIDs []string) (*Re
 	resp, err := s.client.Do(req, nil)
 	return resp, err
 }
+
+// For a given sprint Id, return all issues currently associated with that sprint
+//
+//  JIRA API Docs: https://docs.atlassian.com/jira-software/REST/cloud/#agile/1.0/board/{boardId}/sprint-getIssuesForSprint
+func (s *SprintService) GetIssuesInSprint(sprintID int) ([]Issue, *Response, error) {
+	apiEndpoint := fmt.Sprintf("rest/agile/1.0/sprint/%d/issue", sprintID)
+
+	req, err := s.client.NewRequest("GET", apiEndpoint, nil)
+
+	if err != nil {
+		return nil, nil, err
+	}
+
+	result := new(IssuesInSprintResult)
+	resp, err := s.client.Do(req, result)
+	return result.Issues, resp, err
+}